A method for using a page description language to electronically express colored patches on the border of contract proofs, such that a user can quickly and easily evaluate whether the color of prints produced using a color printer are correct. The verification is performed by visually comparing the test patches added to a print with color patches in publicly available standard color sample swatches.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for confirming a correct selection of an output profile for a printer, comprising: encoding objects within a fragment of a page description in device independent color spaces; transforming the device independent objects through an output profile; calibrating the transformed objects based on calibration values that are applied to individual output colorants; configuring the printer to print the fragment of the page description in a margin of a printed page; comparing the printed fragment of the page description to a patch in a swatch book that corresponds to the printed fragment of page description to determine whether the printed fragment matches the patch in the swatch book; and correcting the printer configuration if the printed fragment of page description does not match the patch in the swatch book.
2. The method of claim 1 , wherein said configuring step comprising the steps of: adding patches to one of a raster image processor associated with the printer, an imposition program and a print job.
3. The method of claim 1 , wherein the swatch book is a DIC.TM. or TOYO.TM. swatch book.
4. The method of claim 1 , wherein the objects are converted to a profile connection space based on known algorithms.
5. The method of claim 1 , wherein the fragment of the page description comprises a plurality of patches.
6. The method of claim 5 , wherein the fragment of the page description further comprises a reference name for each of the plurality of patches.
7. The method of claim 6 , wherein each reference name is listed in the swatch book.
8. The method of claim 1 , wherein the device independent color spaces are one of CIEBasedA, CIEBasedABC, CIEBasedDEF, CIEBasedDEFG, Lab, ICCBased, and CaIRGB.
9. The method of claim 1 , wherein the individual colorants are at least one of cyan, magenta, yellow and black.
10. The method of claim 1 , wherein said comparison step comprising the step of: performing a visual comparison of the printed fragment of the page description to a patch in the swatch book.
11. The method of claim 10 , wherein the visual comparison is performed for all printed fragments of the page description.
12. The method of claim 1 , wherein the swatch book is a PANTONE.RTM. coated swatch book.
13. A computer readable medium having computer readable instructions stored thereon to: encode objects within a fragment of a page description in device independent color spaces; transform the device independent objects through an output profile; calibrate the transformed objects based on calibration values that are applied to individual output colorants; configure a printer to print the fragment of the page description in a margin of a printed page; and allow a user to correct the printer configuration if the printed fragment of page description does not match a patch in a swatch book.
14. The computer readable medium of claim 13 , wherein the fragment of the page description comprises a plurality of patches.
15. The computer readable medium of claim 14 , wherein the fragment of the page description further comprises a reference name for each of the plurality of patches.
16. The computer readable medium of claim 15 , wherein each reference name is listed in the swatch book.
17. A system configured to confirm a correct selection of an output profile for a printer, comprising: means for encoding objects within a fragment of a page description in device independent color spaces; means for transforming the device independent objects through an output profile; means for calibrating the transformed objects based on calibration values that are applied to individual output colorants; means for configuring the printer to print the fragment of the page description in a margin of a printed page; and means for correcting the printer configuration if the printed fragment of page description does not match a patch in a swatch book.
18. The system of claim 17 , wherein the fragment of the page description comprises a plurality of patches.
19. The system of claim 18 , wherein the fragment of the page description further comprises a reference name for each of the plurality of patches.
20. The system of claim 19 , wherein each reference name is listed in the swatch book.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 20, 2003
November 20, 2007
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